24 THE MOLL USC A OF MUSGATINE COUNTY. 



SHELLS FOUND IN THE LOESS IN MUSCATINE AND 



VICINITY, 



Helix cooperi, W. G. BINNEY. Common. H. fulva, DKAP. 

 Common. H. lineata, SAY. Common. H. pulchella, MUL- 

 LER. Common. H, striatella, ANTHONY. Abundant. Pupa 

 blandi, MORSE. Common. P. muscorum, LIN. Common. 

 P. simplex, GOULD. Common. Succinea avara, SAY. 

 Abundant. S. obliqua, SAY. Common. Helicina occulta, 

 SAY. Rare. This species has been found alive and com- 

 mon in Hardin County, Iowa, by Dr. E. H. King of West Lib- 

 erty, from whom we have received specimens. Limnea. 

 Common at one point near the top of the loess in this city. 

 No other water species has been found in this deposit, so far 

 as we know, in this locality. Not one of all our water- 

 mollusks is found in the loess, and only six of our living 

 land species. The two most abundant in the loess (H. 

 striatella and S. avara) are apparently nearly extinct here 

 now. The shells are all most perfectly preserved in the loess, 

 and with the exception of the loss of the epidermis, and con- 

 sequent bleached appearance, they are as complete as the 

 shells we find in our woods and ponds to-day. 



